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PMCH transmission method and equipment

A transmission method and a technology for transmitting subframes, which are applied in transmission systems, digital transmission systems, and multiple uses of transmission paths, and can solve problems such as inability to support MBMS transmission and reduce transmission efficiency

Active Publication Date: 2014-09-10
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] On the NCT carrier, if PMCH transmission is not supported, the multi-cell MBMS transmission service can only be provided through the backward compatible carrier. If the UE (User Equipment, user equipment, that is, the terminal) only aggregates multiple NCTs, it cannot support MBMS transmission. , at this time, the network needs to use unicast to provide data transmission to the UE, which will reduce the transmission efficiency, so the NCT needs to support PMCH transmission
[0008] Currently there is no solution to support PMCH transmission on NCT

Method used

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  • PMCH transmission method and equipment
  • PMCH transmission method and equipment
  • PMCH transmission method and equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0054] Such as image 3 As indicated, the process may include:

[0055] Step 301: The base station sends PMCH subframe configuration signaling to the UE, the configuration signaling indicates the PMCH transmission subframe; wherein, the PMCH transmission subframe includes a first time slot and a second time slot, and the first time slot is used for transmission PMCH, the second time slot is used to transmit unicast channel or / and signal.

[0056] Step 302: the base station sends a PMCH subframe to the UE.

[0057] Specifically, the base station maps the EPDCCH to the first time slot of the subframe for transmission, and maps the PMCH to the second time slot of the subframe for transmission, so that the EPDCCH and PMCH are time-division multiplexed and transmitted in the subframe, further Yes, in the time slot for transmitting EPDCCH, EPDCCH and PDSCH are transmitted by frequency division multiplexing.

[0058] Such as Figure 4 As shown in , EPDCCH and PDSCH use the first ...

Embodiment 2

[0062] The flow of this embodiment is the same as that of Embodiment 1, but the transmission positions of PMCH and EPDCCH are different, specifically:

[0063] Such as Figure 5 As shown in , the PMCH uses the first slot of the subframe for transmission, and the PMCH demodulation pilot is mapped according to the mapping method of the existing MBSFN pilot in the second slot, and mapped to the first slot of the current slot. On the first and fifth OFDM symbols, when calculating the TB size of the PMCH, the corresponding number of PRBs is: the number of PRBs corresponding to the downlink bandwidth multiplied by a coefficient of 0.6.

[0064] EPDCCH / PDSCH (ie EPDCCH, or EPDCCH and PDSCH) is transmitted in the second slot of the subframe, and the DMRS structure in this slot uses the DMRS in the second slot of the ordinary subframe under the extended CP structure, if there is PDSCH transmission, when calculating the TB size of PDSCH, let the corresponding number of PRBs be: the num...

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PUM

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Abstract

Disclosed is a PMCH transmission method and a device. The method comprises: a network device sending a PMCH subframe configuration signalling to a terminal with the configuration signalling indicating a PMCH transmission subframe, wherein the PMCH transmission subframe comprises a first time slot and a second time slot, with the first time slot being used for transmitting a PMCH and the second time slot being used for transmitting a unicast channel and / or a signal; the network device mapping the PMCH onto the first time slot for transmission in the PMCH transmission subframe; and after receiving the PMCH subframe configuration signalling sent by the network device, a terminal device receiving the PMCH mapped onto the first time slot in the PMCH transmission subframe.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a PMCH transmission method and equipment. Background technique [0002] PMCH (Physical multicast channel, physical multicast channel) is a downlink channel in an LTE (Long Term Evolution, long-term evolution) system, which can transmit files or data content to multiple users. [0003] PMCH is used to carry multicast service information. In the TD (Time Division, Time Division)-LTE system, MBMS (Multimedia Broadcast Multicast Service, multimedia broadcast multicast function) is divided into single-cell transmission and multi-cell transmission. The MBMS service transmitted by a single cell is only transmitted within one cell, and the multicast service channel and the multicast control channel are mapped to the downlink shared channel for point-to-multipoint transmission. The MBMS service transmitted by multiple cells is within an MBSFN (Multicast Broadcast Single Fre...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/06H04L27/26
CPCH04W72/04H04L5/005H04L5/0053H04L5/0094
Inventor 司倩倩林亚男潘学明沈祖康
Owner DATANG MOBILE COMM EQUIP CO LTD
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